Could Russia's war kick-start a renewable-energy revolution? It depends where in the world you look

Wind turbines in Eaglesham Moor, southwest of Glasgow, in January. Energy experts say Russia's war in Ukraine could help spur a renewable energy revolution.

(CNN)As Russia's brutal war in Ukraine disrupts energy supply and forces world leaders to examine their dependence on Russian oil and natural gas, leaders in the United States and Europe are scrambling to fill the gaps.

UK Prime Minister Boris Johnson this week advocated for new oil and gas drilling in the North Sea in the name of energy security, and there are talks in the UK and in Germany of delaying the closure of some coal-fired power plants.
There's also increased pressure on the oil- and natural gas-rich US to produce more to send to Europe, and US President Joe Biden is trying to get Middle Eastern countries to produce more oil to help bring sky-high gasoline prices down.
    This is all bad news for the climate crisis — which is caused by the burning of fossil fuels — but they are short-term responses. There is also good reason to believe that the upheaval brought by Russia's war will speed the transition to clean energy in the long run.
      While Johnson wrote of more drilling, he also wrote of doubling down on renewable energy, such as solar or wind power. A UK government spokesperson told CNN that a new energy strategy to be revealed next week will "supercharge" its renewables and nuclear capacity.
        In Germany, which is highly dependent on Russian gas, the government brought forward its deadline for a full transition to renewables in its power sector by at least five years, to 2035.
        But in the US, the path toward a clean energy transition has stalled in the Congress.
          "The war will supercharge the European energy transition — most European leaders understand that diversifying from fossil fuels is a path to greater security," Nikos Tsafos, an energy expert with the Center for Strategic and International Studies, told CNN in an email interview. "The response in the United States has been more bifurcated — some calling for more oil and gas production, others for more investments in renewable energy."
          Ultimately, Europe and the US are on a different footing with their clean energy transitions. The European Union, for example, has a detailed emissions target in law and a road map to cut emissions 55% by 2030. Biden's administration has undertaken a number of executive actions and federal regulations to work toward the US emissions goal to cut 50-52% of emissions by 2030. But his target is lacking legislative teeth.
          "We must walk and chew gum — address supply in the short term because families need to take their kids to school, and go to work, get groceries and go about their lives — and often that requires gas," a White House spokesperson told CNN. "But in the long term we must speed up — not slow down — our transition to a clean energy future."
          The Westlands Solar Park near Lemoore, California.
          The EU road map still needs a vote, but it is backed by policies already underway. And many European countries have more developed clean energy infrastructure than the US, which is just starting to build out its offshore wind.
          In 2020, the EU and UK had the capacity to produce around 49% of their electricity from renewables, almost twice that of the US' 25%, according to the International Renewables Energy Agency. The EU and UK combined have about double the solar power capacity and wind capacity of the US, the agency has reported.
          "It's clear Europe has a game plan and the US has a target, which is not the same thing," said John Larsen, a partner at the nonpartisan Rhodium Group.

          The renewables race

          In an interview with The Washington Post, International Energy Agency executive director Fatih Birol said Monday he believed the current situation in Europe was the first truly global energy crisis the world has faced — and could shape global energy for years to come.
          "It can be a turning point," Birol said, noting that governments responded to the oil shortage of the 1970s by making cars more fuel efficient and investing in nuclear energy. "I am also hopeful that at the end of the first global energy crisis, countries, not just states, will come up with new energy policies accelerating the clean energy transitions."
          Europe is already heading in that direction.
          "It's amazing how fast the Europeans have moved," said Sam Ori, executive director of the University of Chicago's Energy Policy Institute. "They're racing toward clean electricity."
          The Burbo Bank Offshore Wind Farm in Liverpool Bay on the west coast of the UK.
          Biden's administration has done several things on its own: proposing new regulations on vehicle emissions and methane; greenlighting offshore wind projects as well as onshore renewables; and taking executive actions on industrial emissions.
          Still, Biden has been unable to get much of his clean energy and climate agenda through Congress so far, and experts say he doesn't have much hope of reaching his emissions targets without it.